(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*

This guide provides a more detailed description of the syntax that is supported along with examples.

This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.

Concept Search - What can I type?

For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.

Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.

Publishing Venue

Related People

Abstract

An object is treated by using it as a sputtering target and then sputtering it in an inert gas, such as argon, in a high pressure plasma (pressure is greater than 100mTorr). Thus, sputtering rearranges the position of the atoms on the object so the atoms redeposit on the object, but they are in different locations than they had been. That tends to increase the homogeneity of composition of the surface of the material. In addition, certain species in an alloy which are sputtered more easily may be depleted from the surface. For example in stainless steel, the Cr composition of the surface is increased as the other elements in the alloy are sputtered away to a somewhat greater degree.

Country

United States

Language

English (United States)

This text was extracted from a PDF file.

This is the abbreviated version, containing approximately
53% of the total text.

Page 1 of 2

Surface Modification by High Pressure Sputtering

An object is treated by using it as a sputtering target and then sputtering it in
an inert gas, such as argon, in a high pressure plasma (pressure is greater than
100mTorr). Thus, sputtering rearranges the position of the atoms on the object
so the atoms redeposit on the object, but they are in different locations than they
had been. That tends to increase the homogeneity of composition of the surface
of the material. In addition, certain species in an alloy which are sputtered more
easily may be depleted from the surface. For example in stainless steel, the Cr
composition of the surface is increased as the other elements in the alloy are
sputtered away to a somewhat greater degree.

This treatment modifies the surface of the object and can result in improved
properties such as corrosion resistance, hardness, friction and wear.

When a target is sputtered in a high pressure plasma (P > _ 100 mTorr) the
sputtered atoms thermalize a short distance from the target. Then the sputtered
atoms may diffuse back to the target so the net transport from the target is small.
The target surface, however, is significantly modified by this treatment. In
particular, we found that high pressure sputtering imparts enhanced corrosion
resistance and other useful properties to the surface.

For example, samples of 304 stainless steel sheet were sandblasted,
electropolished, masked and exposed to argon sputtering pressures of 100, 310
and 250mTorr. The corrosion res are shown in Table I.